Arrhenius Acid Definition: Hydronium breaks up to yield an H+ in solution. Arrhenius Base Definition: Hydroxide is an OH-dissolved in water. Bronsted-Lowry Acid Definition: Hydronium is an H+ donor regardless of solution. Bronsted-Lowry Base Definition: Hydroxide attacks and accepts the H+ from hydronium.Lewis Acid Definition: The H+ on Hydronium accepts the attacking electron pair to form a bond.ronsted-Lowry Acid Definition: Hydronium is an H+ donor regardless of solution. Bronsted-Lowry Base Definition: Hydroxide attacks and accepts the H+ from hydronium. Lewis Acid Definition: The H+ on Hydronium accepts the attacking electron pair to form a bond.
It is believed that the first Ancient Chinese fire works were made in Han Dynasty (206 BC-220 AD). Fireworks in Ancient China were originally used for shows, christenings and special funeral ceremonies.
Fireworks have been around for centuries and are believed to have been invented by the Chinese. A Chinese document (from about 1040) showed how to wrap gunpowder in paper to make a 'fire pill.' This small firecracker made a very loud bang, which was believed to scare off evil spirits. Fireworks made their way to Europe sometime in the 13th century. The popularity of fireworks grew, and by the early 1500s groups like the army were lighting them for special events. The Italians were masters of fireworks through the 17th Century.